Questions
A black body at radiates heat at the rate of 7 cal . At a temperature of the rate of heat radiated in the same units will be
detailed solution
Correct option is
Apply Stefan's law of radiation, E = σT4⇒ E1E2 = [T1T2]4⇒ E2 = 7[273+727273+227]4 = (1000500)4×7⇒ E2 = 112 cal-cm-2s-1Talk to our academic expert!
Similar Questions
For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
radiating power will be :
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